Heating apparatus



F. HALDEMAN.

HEATING APPARATUS. APPLICATION min JULY 2!. I918.

Patented Aug. 26,1919;

2 S H E E T S -SHEET|- INVENTOR Mre'clJfiZJeI/m I 1 E W ATTORNEY) UNIT STATES PATENT ()FFICE.

FREDERICK HALDEMAN, 0F PORTLAND, OREGON.

HEATING APPARATUS.

Application filed July 27, 1918.

To all whom it may concern Be it known that I, FREDERICK I-IALDE- MAN, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented a new and Improved Heating Apparatus, of which the following is a specification.

My invention, which relates generally to that class of steam or hot water plants, more especially provided for residences and business houses, is more particularly directed to an improved construction of a boiler in which is included an improved arrangement for burning gas, under pressure, and by which the gas and air flames are so directed with respect to the water storage steam 'drumsythat a uniform and maximum heat is provided for contact with the said drums anc their connecting coils, before the prodnets of combustion pass off to the chimney or stack.

Another object of my invention is to provide a gas heated boiler construction in which a plurality of individual heating coils and corresponding burner units are utilized and are relatively so arranged that one or more of the said coils and their corresponding burner units may be cut off in the summer or such other time, when not much heat is required.

Another and essential feature of my invention is the provlsion, in a gas heated boiler eonstructlon of the character stated,

for causing the flames to follow in the direc- "claims and illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of my improved gas heated boiler construction, the front plate and wall of the housing being removed.

Fig. 2 is a side elevation thereof, partly in section, looking in the direction of the arrows on Fig. 1.

Fig. 3 is a horizontal section of a portion thereof, taken substantially on the line 33 on Fig. 2, and illustrates the individual burners and the gas and air supplies therefor.

Specification of Letters Patent.

Patented Aug. 26, 1919.

Serial No. 247,033.

Fig. 4 is a cross section taken substantially on the hue 4L-l on Fig. 3 and 1llus tratmg one of the burners and its connection, the same belng shown on a somewhat enlarged scale.

In the drawings, I have illustrated an arrangement of water and steam drums, heatmg coils and burners adapted for heating an ordinary five or six room house, it being readily apparent from the drawings that my construction of heating apparatus may be readily modified by widening the housing to take in more coils and burners and for the utilization of more drums, when my invention is to be applied for heating apartments, stores and the like.

In the present showing, the housing includes a main or fire chamber 1, which extends the full width of the housing and from the front plate and wall 2 and 10 to the back or fire-wall 3, of brick.

The housing also includes a supplemental or back chamber 4 that extends the full height of the said housing and constitutes a compartment for the reception of the horizontally disposed return coils 5 that connect with the lower or water drums 6, one of which is located at each end of the fire-chamber, and which coils also connect with a mud drum 7 0 that extends crosswise of and is located at the bottom of the supplemental compartment 4, the latter, in my construction, also serving as a flue passage for the products of combustion, which pass off through a subterranean passageway to a flue 8 whose inlet 9 extends through the bottom of the chamber 4, asis clearly shown in Fig. 2 of the drawings.

As is best shown in Fig. 2, the upperor steam drums and the lower or water drums have their front ends supported in a front wall 10 and their rear ends supported by the inner or fire-brick wall 3 with the extremities of the said rear ends of the said water and steam drums extended into the chamber 4 to provide for conveniently connectin the laterals 50 of the return coils 5 with the water drums and the taps 11 of the heatin coils (presently further explained) with t e steam drums.

In my construction of heating apparatus, a series of coils 12, in practice preferably copper coils, are joined at their lower ends with a pipe connection 13 that is common to all of the coils and is located under the front ends of the water drums 6 with which the Opposite ends of the said pipe 13 onnect, see Fig. 1.

The coils 12 extend diagonally upwardly and rearwardly and join with a common "pipe connection 1%, the ends of which conwound and provide, as it were, restricted fire passages that extend from the lowern'iost to the uppermost. end thereof.

17 d'esign-atesa draft opening. in the front plate and front wall.

Cooperative with. the series of heating coils 12 is a series of burners 18, one for each coil 12, each of which includes a nozzle 19 that extends through the front wall of the housing-and has itsejector end angled to project up a short distance within the passages 16 of their respective coils 12, see Figs. '2 and 4.

All of the burners 18 connect with a gas feed pipe 20 and each of such burners has a control valve 21 located outside of the housing.

22 indicates an air supply pipe that has laterals 23,. one for each burner, that discharge into the burner nozzle to mix with the gasfeed thereto, it being understood the gas pressure to the burners is regulated by their respective control: valves.

To aid in directing the flames from the burners to pass under and around the coils 12, the inner face 31 of the fire-wall 3, is inclined at an angle of lesser degree than the angle of inclination of the coils 12 and such. arrangement of the fire-wall. combined with the diagonally disposed coils, provides for a gradually restricted heatingspace between the fire-wall and the upper portion of the coil and thereby tends to overcome a too rapid expansion of the flames or hot air as suchfiames pass up to the escape 4-0.

From the foregoing taken in connection with the drawings, the complete arrangement and the advantages of my construction of heating apparatus will be readily apparent to those skilled in the artto-which my invention relates.

In operation, the flamesfrom the burners will follow up andaround their respective coils 12, as shown by the indicator line 00 on Fig. 2, and as they pass through thetop opening 1O, the heat products will take the downward course'indicated and pass out to the stack. I While I have shown-and descr bed one specific embodiment of my invention yet it is obvious that changes in the details of construction, arrangement and design of the parts may be made without departing from thespirit of the invention or the scope of the appended claims, such changes of modifications being those that may be made to suit the particular desires of the user or builder; for instance, instead of employing five coils, a greater or lesser number of coils may be employed, instead of locating the tank 6 at the low level shown in Fig. 2, the

tank 6 may be raised somewhat higher above the tank 70, and instead of making the inner face of the back or fire wall on an angle less than the inclination of the coils 12 the said fire wall may be inclined in parallelism with the said coils, and furthermore while I have shown and described my system as particularly adapted for steam heating the same may be utilized for hot water systems as Well.

What I I claim is:

1. In a heating apparatus of the character the coil as a whole communicates withv said flue, a burner directed into the lower end of said. coil, and a lower off-take from the flue,

all being arranged whereby the burner flame.

will pass along and around said coil into the upper region of said flue, anoutfiow pipe connected with the upper reservoir and areturn flow pipe communicating with the lower reservoir. i v I 2. In a heating apparatus of the. character stated, a combustion chamber, at least one steam drum located in the top of said chamber, a water heating drum in the lower part of the said chamber, a pipe coil for eachpair of upper and lower drums that connect at their lower end with the front end of the -water drum and at the upper end with the rear end of the steam drum, the said combustion chamber including a fire-wall whose front or fire receiving face. inclines in the direction of inclination of the coils, a gas burner for each coil that extends through the front wall ofthe combustion chamber and ejects against the co1l,.return circulation 3. In a heating system of thecharacter 'stated, a structureincluding a front wall,

side walls, a back wall and an intermediate wall dividlng the structure into a combustion chamber and a flue chamber, said in termediate wall having a passage in its upper end between the combustion chamber and the flue chamber for the products of combustion, heating drums mounted in said structure to lie within said combustion chamber and having one end of each drum projected into said flue chamber, heating coils connecting said drums and projecting through said passage of said intermediate wall whereby said coils will lie partly in the combustion chamber and partly in the flue chamber, means for directing heat against said coils in the combustion chamber, said drums lying within the influence of said heat directing means, an otftake pipe from the highest drum, a mud drum in the flue chamber connected with the lower of the first mentioned drums and a return circulation pipe passing into the flue chamber and connecting with the mud drum, all being arranged substantially as shown and for the purposes described.

4. In a heating apparatus of the character stated, a combustion chamber, at least one pair of drums arranged one above the other, the upper functioning as a steam drum and the lower serving as a water reservoir, a pipe coil connected with the upper and lower drums, said coil extending diagonally in a vertical plane, the lower end of the coil being connected to the lower drum and the upper end of the coil being connected to the upper drum, a fire wall in the combustion chamber inclined in the direction of the inclination of the pipe coil, a flue, an outlet at the upper end of the fire wall that connects with the fine, a supply riser connected to the upper drum and a return pipe in communication with the lower drum, a gas burner projected through the front wall of the combustion chamber and held to eject the flame in the directionof the inclination of the pipe coil.

5. In a heating apparatus of the character stated, a combustion chamber, at least one pair of drums arranged one above the other, the upper operating as a steam drum, the lower serving as a water heater, a pipe coil connecting the upper and lower drums, said coils extending diagonally upward from the water to the steam drum, a fire-wall in the combustion chamber inclined in the direction of the inclination of the pipe coil, a down draft flue, an outlet at the upper end of the fire-wall that connects with the down draft flue, return pipes that join the steam and Water drum, a gas burner projected through the front wall of the combustion chamber that ejects the flame in the direction of the inclination of the pipe coil, the said burner having a control valve exterior of the front wall of the combustion chamber and a valved air feed that discharges into the burner.

6. In a heating apparatus of the character stated, a combustion chamber, at least one pair of drums arranged one above the other, the upper operating as a steam drum, the lower serving as a water heater, a pipe coil connecting the upper and lower drums, said coils extending diagonally upward from the water to the'steam drum, a lire-wall in the combustion chamber inclined in the direction of the inclination of the pipe coil, a down draft flue, an outlet at the upper end of the fire-wall that/connects with the flue, return pipes that join the steam and water drums, a gas burner projected through the front wall of the combustion chamber that ejects the flame in the direction of the inclination of the pipe coil, the said burner having a control valve exterior of the front wall of the combustion chamber and a valved air feed that discharges into the burner, the said nozzle being angled and projected up within the pipe coil.

7. In a heating apparatus of the character stated, the combination of a water reservoir, a pipe coil, the lower end of which is connected with the water reservoir, said coil having its convolutions in close juxtaposi' tion and inclined upwardly from its entrant end toward its exit end, a combustion chamher in which said reservoir and coil are mounted, a flue at the rear of the combustion chamber with which the interior of the coil as a whole communicates at the upper end of the coil, means for directing a flame into the lower end of the coil as a whole, an off-take duct from the upper end of the coil, a return flow duct in comn'iunication with the water reservoir, and means for causing a down draft through the flue to draw the products of combustion through the interior of the coil into the flue and down and out of the apparatus.

8. In a water heating apparatus, the combination of at least one pair of water heating drums, one of which is located above the other, a combustion chamber in which the drums are mounted, an ofl'take flue, a passage connecting the upper rear end of the combustion chamber and the said flue, a circulating pipe connecting the front end of the lower drum with the rear end of the upper drum, a burner projected under the front end of the lower drum and means for creating a heat circulation around the circulating pipe in passing to the flue outlet, the said means including a bridge wall in the combustion chamber whose fire impacting face inclines in the direction of inclination of the circulating pipe.

9. In a water heating apparatus of the character described; a combustion chamber that includes a fire-wall whose fire impacting face inclines upwardly from the bottom 10 ing system cooperating with the drums, said circulating system including a pipe coil that connects with the front end of the lower drum and the rear end of the upper drum, and return COllS mounted in the supplemental chamber. in communlcatlon with the lower drum, at least one burner projected tl'irough the front wall of the combustion chamber and discharging against the lower end of the pipe coil and'means tending to direct a flame as it passes, from the burner 20 to the flue passage in the direction of and around the pipe coil; 1

' FREDERICK HALDEMANLI,

Copies of this patent may be obtained for five cents each, by addressing the Commissionerqof Patents, Washington, 1). G. 

